[gimp] desktop: add test-appdata.sh to EXTRA_DIST

[Michael Natterer <mitch src gnome org>]

commit f3d827d082ef89645c8bbdb2c32cbc830531fc95
Author: Michael Natterer <mitch gimp org>
Date:   Fri Jun 2 19:40:17 2017 +0200

    desktop: add test-appdata.sh to EXTRA_DIST

 desktop/Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/desktop/Makefile.am b/desktop/Makefile.am
index 00b35fe..d327080 100644
--- a/desktop/Makefile.am
+++ b/desktop/Makefile.am
@@ -41,6 +41,7 @@ endif
 
 EXTRA_DIST = \
        $(appdata_in_files)     \
+       test-appdata.sh         \
        gimp.desktop.in.in      \
        16x16/gimp.png          \
        22x22/gimp.png          \